Golfdom, May 2013

SuperScience TIMELY TURF ADVICE by Clark Throssell Ph D Clark Talks Turf A multi site contact fungicide for dollar spot control Mike Agnew Ph D is a senior field technical manager for Syngenta Turf and Landscape Agnew is active in the development of many of Syngentas plant protectants especially fungicides He can be reached at michael agnew@ syngenta com Q Secure is new to the turf market What makes it unique Secure fluazinam is a multi site contact fungicide that inhibits fungal respiration at several sites in the respiration pathway It is the first multi site contact fungicide registered for dollar spot control since Daconil Secure will be a very effective tank mix partner with single site fungicides for dollar spot control Q Which diseases is Secure most effective in controlling Secure is very effective in controlling dollar spot on greens tees fairways and roughs It is most effective on fairways because the higher mowing height means more turf canopy is present to intercept the fungicide And a lower mowing frequency on fairways means less fungicide is removed when mowing Secure also will control DMIand benzimidazole resistant strains of dollar spot and is excellent on brown patch and on leaf spot diseases of bermudagrass Q What are situations where Secure is not a good fit in disease management programs Secure is effective on foliar diseases As a contact fungicide it is not effective on root diseases Secure is excellent as a preventive fungicide and as a tank mix partner with a curative fungicide Q Do you recommend Secure and Daconil be tank mixed We are currently investigating this potential use of Secure and Daconil We need to clearly define the benefits before making any recommendations Q What application strategy do you recommend with Secure For dollar spot control in cool season grasses we recommend Secure be applied prior to the turfgrass showing symptoms of dollar spot infection Superintendents should apply Secure at 05 oz per 1000 sq ft tank mixed with a single site fungicide every 14 days throughout the dollar spot season Uniform coverage of the turfgrass canopy is critical and research has shown that 1 to 2 gallons per 1000 sq ft of spray volume provides excellent dollar spot control Following this program will result in excellent control of dollar spot in fall A superintendent is limited to a total of 258 fl oz of Secure per acre per calendar year Twelve applications at 05 fl oz per 1000 sq ft are equal to 258 fl oz per acre An additional benefit of Secure is that while providing excellent dollar spot control it also helps in dollar spot resistance management Applications of Daconil that were formerly used for dollar spot control and resistance management can now be shifted to snow mold control applications while staying below the yearly Daconil application cap Q Are there any precautions that should be taken when applying Secure Before using Secure for the first time superintendents should carefully read the label and pay close attention to the precautions listed on the label Those who used it last year should reread the label this year so the information is fresh in their minds Clark Throssell Ph D loves to talk turf Contact him at clarkthrossell@ bresnan net Ad Index May 2013 Golfdom 39 Golfdom com PHOTO BY JOHN R JOHNSON GOLFPHOTOS COM Companies featured in this issue ADVERTISER PAGE Air O Lator 37 Arysta LifeScience 7 B A S F Corp 21 25 CV4 Bayer CV2 1 Control Solutions 3 Grigg Bros 13 J2 Golf Marketing 4 Kochek Co Inc 36 Lely Turf Products 10 Nufarm 32 Miltona 31 Rain Bird 11 Smithco 5 Spectrum Technologies 15 Syngenta CV3 Toro 17 Turfco 30 Winfield Solutions 9 WS Darley 35 This index is provided as an additional service The publisher does not assume any liability for errors or omissions

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